@media all {
	
	/*
	   background for div, which is behind the menubar => same background as menubar
	*/
	#mainnav {
		background: -moz-linear-gradient(center top, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0) ) repeat scroll 0 0 #C4C4C4;
		border-bottom: 1px solid white;
	}
	
	/*
	   default height is needed for menubar
	   otherwise if no menuitem is displayed (e.g. after logout), menubar size will be 0
	*/
	.ui-menubar{
	   height: 32px; 
	}
}